M*A*S*H Slash

I'm curious. What do you think is more difficult? I primarily slash sf/fantasy genre-type dramas, but I've written a lot of due South slash (which definitely has a lot of comedic elements), and I'm currently writing a fair bit of Sports Night--and I've written a bit of M*A*S*H slash, as well. Every fandom I write in has its own set of challenges (and also things that are easier to write than in other fandoms). I hadn't really noticed a difference in my own writing, and while I'm not arguing with your experience, I'm curious as to what I'm overlooking. :)